Английская Википедия:HD 40307 e

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Шаблон:Short description Шаблон:Infobox planet HD 40307 e is an extrasolar planet candidate suspected to be orbiting the star HD 40307. It is located 42 light-years away in the direction of the southern constellation Pictor. The planet was discovered by the radial velocity method, using the European Southern Observatory's HARPS apparatus[1][2][3] by a team of astronomers led by Mikko Tuomi at the University of Hertfordshire and Guillem Anglada-Escude of the University of Göttingen, Germany.[4]

The existence of the planet was disputed in 2015, as more Doppler spectroscopy data has become available.[5]

Planetary characteristics

Its minimum mass is 3.5 that of Earth - the smallest - and dynamical models suggest it cannot be much more (and so is measured close to edge-on).[1] It further gets roughly the same insolation from its star as Mercury gets from the Sun.[6] Planets like this in that system have been presumed "super-Earth".[7]

However planets b, c, and d are presumed to have migrated in from outer orbits; and planet b is predicted a sub-Neptune.[8] It is likely that this planet formed even further out. Whether it is a sub-Neptune, a super-Venus or even a super-Mercury is unknown.

References

Шаблон:Reflist

External links

Шаблон:Sky

Шаблон:HD 40307 Шаблон:2012 in space


Шаблон:Extrasolar-planet-stub